In 1945, as part of the Occupation forces sent to postwar Japan Nick Zappetti, a native of Italian East Harlem, entered a world as strange as any he had ever known. In postwar Tokyo, however, he realised there were certain opportunities. He had a failed stint as a professional wrestler, and participated in a fumbled (but famous) diamond heist. He was deported but managed to return with the assistance of the Mafia. Then Nick opened a pizza joint in what would be the centre of Tokyo's nightlife and became "the king of Roppongi and Mafia boss of Tokyo, " and the intimate of some of Japan's most notorious underworld figures as well as many of its political and business leaders. Following Zappetti's rising and falling fortunes, and his love-hate relationship with his adopted country, Robert Whiting show us the sinister (and sometimes ridiculous) goings-on among Tokyo's traditional criminal gangs as they developed from local racketeers and gamblers into lynchpins of international finance, politics and corruption. Here is a fresh perspective on postwar Japan and how it went from being a defeated nation to an economic player, with a little help from some less than diplomatic friends.